Mining apparatus.



C. j. E. WXBOM.

WMM; APPARATUS.

PPHCTN HLED OCT. 1l, |912- RENEWED OCT. 27,1917. WNM Eatented May 28, 1918.

4 SHEETS-SHEET 1. 11b/mf 'y M y y E. WAXBUM.

MINING APPARATUS. APPLICATION FILED oc. 11.1912.

.r Lff' RENEWED OCT. 27,1917.

Patnted May 28, 9l8..

4 SHEETS-SHEET 3.

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MINING APPARATUS.

APPLICATION FILED 0CT. I1. i912. RENEWED OCT. 27,1917.

4.. GOIN wx.. M n dm e t 4 w 3 t nu P im MM G GI climi. JQ e, Wessels, ois tviisc mit To @Zita/'tom it may concern: L

i Be it known that L lA-RL il. W'Aimoi/r.,

e citizen. 'ot'tlie United Steteeresiiiiogg Westerville, giri thecounty loi? lBramlrliii eroi Stute of Gioie, lieve invented cert/siii new Wheeled truck) sind" carries e, horizontally projecting kort cutting .mechanism which is capable of pioveiriet' horizontally sind is erlapteil to operate 'While support/eri` on the bose or truelr. ln using e mining epperetus of this type it is customary to ley s, single .fill

' one side of the room to the other.

track along the center of the room or enti-y' 'being cut. The iriiniieg mechanism or eppeiietus is then moved forward along' this track to e point meer the :ieee emi. use is mede oi the cutting iiieclieiiism thereof to out e keriexteiiiiiiig eeross the fece from ting meelmiiisiii remains supported on. the truclr While the cutting is being corrie-ii on movable not only tre'iisversely tieross the tfront ci the iiieeliiiie (preferably singularly vbout u fixed vertical exis), lout'elso trees latively outward end inward sway from emi toward the centrel parte of the truck power operated means are provided for iiiovliig the cutting mechmiismA horizontally (in this cose radially) relatively 'to the treme to .ifeecl themeclieiiism to its work; 'the critter freine is held iii :i dei-imite angular relation tothe 'oase treme for. eocli position of 'transverse adjustment; :md the outer limit of radial movement is controllable enel ceri loe varied for dilierent singulier positions. The eem struction is such that the machine een loe used to cut kerifs having,- eiitiiiies other 'then semi-circuler. liiy my present invention l lieve provided en apparatus iii which the cutting mechanism is movable not only transversely and; transletively, as aforesaid, but is also adjustable vertically.

As is Well known it is customary iii the mining ofccoel 'to mit e korf under tiievveli to be removed enel then to breek down the materia-l above the lrerf. But initier some I mitm, elettroz remise sommier, oir serieuses, oil* editie' @and useful improvement iii Mining file-psf l retos,` koi? which the following is ai specifi!y cantieri, refereiioe loeiiighed' therein te 'tile arises The invention relates te s, .mining appetit.

. preveiits .vided with ineens when rossi-ieee. seis-ie il?, Mw.) @civiel Tile. mitteilt.-

"'-Ollition's it Lisvpossilile and in izict preferztiiiei'o eiit'tiie leefnot the lootto'riiv but 3e eee eoiisifiereiiljf eisers the bottom.

rjieretiisfembodyiiig my invention.isy f Wlfiieli weie 'pessiiile the cutting oi* en elew veted'l disteiice shove the mine oor 'reqently ro' the presence iii the coal of what is known es e dirty ioeiid this usuallyv being eoiiiposefi et siete' or other refuse me.- .teriel 'Wliieli it is u iidesireble to permit to become mixed with #tile coel, In] places Where slieli e, dirty bend ,is met with it is :riesirslole tocut it ewey. This cutting" sway for use under ytimer-i condi-tions it.' '.lilie desirability of. korf some of the dirty bensi .not only removes it anni' it from 4iiecomiiif; iiiixe'olivitli the cosh but also provides tile necessary lrerf. is tlie dirty lie-ml is et oiiereiit heights 1n diil'crent mines or eve-ii iii iiifer'enti parte oi tiie seme mine.E vit is desireble'tlist any apparatus riesig-neri iorciittiiig itoutloe pro y vericel eljust ment een. lie eieetm, eppeiietus emu botiyiog my invention is wipecieiy adopted- Tier the class oii'worr 'to vviiieli ii lieve re i iered, lit een readily ediesteriv vertically, or singularly, slid. it ceri easily be trees ported from place to platee..-

Ti lieve shown. im ztppsra jef! F 4prises s, mining machine- 'oi boe breast t 'pe verticeily edjusteioly supported on :ii-territo ble which `is mounted on Wlieeleol truck.- isutit will be umlersiod that-there een ioe wide variation ss concerns tliespeciiie form ofi cutting mechanism used es concerns the meses for driving end ooiitrollirig" it.

the apparatus .siiovvrio` tl'ie cutting meclieiiisiii is supported site, relatively high elevation, es this is usually desirable in dirty lionel Work. is shown, the cutting 1- mechanism is so supporteii es to beve e rele- I lllil 4vstandard construction.

made at a variety of elevations radially from Figur(r l is a side elevation of .the appara-- tus as a whole; l

F ig. 2 is a longitudinal sectional view;

F ig. 3 is a view taken looking upward at the mining machine and mining machine supporting devices separated .trom the truck;-

F ig. elis a plan view of the truck with the mining machine and the mining machine supporting devices removed Fig. 5 is a diagrammatic view indicating one way in which an apparatus embodying my invention may be used. Referring to the drawing, l represents as a whole the main frame of the truclr which is preferably a single metallic plate 2 reinforced at its edges by means or' angle irons 3, 3, and el, 4r. Stiiening angles 5, 5, are preferably also provided near the center. By means of suitable bearing brackets 6, 6, the frame l is mounted upon axles 7 7 to which are secured track wheels 8, 8. The axles and track wheels are not symmetrically disposed withI yespeet to the transverse central plane of the truck but are considerably nearer one end than the other.

For purposes of illustration., l have shown on the truck a Ebreast mining machine of rlhe machine shown is similar to that described in the patent to H. B. Dierdorilu No. 684,356. The machine as a whole is indicated by 2l, and it is shown inverted, that is with the parts which are usually considered the bottom parts uppermost.

The mining machine comprises a carriage or cutter frame 23 and mounted upon this cutter frame is a cutting mechanism in the orrn of an endless cutter chain 24 provided with cutters 25. The connections betvf'een the cutter 'frame 23 and the main truck frame 1 are such that the cutter frame is vertically adjustable and is also movable horizontally either angularly or bodily out ward and inward. When the cutter frame is a part of a standard breast mining machine sueh as is here shown it is mounted on a bed frame 22 in suchA a Way that it is longitudinally movable with, respect thereto. The side parts of the bed frame constitute @guide which permits the cutter iframe to haveitranslative horizontal movements but prevents relativev angular movements with respect to the bed frame 22.

L l Lasagna?,

In the construction shown, the bed trame 22 is carried by a supporting 't amc which is movable horizontally with respect to tho base frame. Preferably this movement ot the supporting 'frame taires place about the liXed vertical axis of a suitable pivot device. It will be observed that this pivot device together with the aforesaid guide on the bod frame 22 insure that the cutter frame. when ever a particular point thereof occupies any given position in relation tothe base traine, shall bear a corresponding and invariable angular relation to the base frame. lu other words, by virtue oi this coustructimi. the cutter frame is held against iride-limite movements, its angular relation to the base 'traine being definitely fixed for cach position ot its transverse adjustment.

Midway between the sides olf thc truck frame l and midway between the axles 7, 7, there is provided a bracket J which is liltcd into a suitab opening in the plate 2 and is provided Vith a vertical bearing aperture l0. Located at equal distances "rom the reny ter oill the aperture l() and preferably equally spaced oircumi'erentiully are a number ol bearing rollers 1l, ll cach arranged 'with its axis extending radially through the ccnter line or' the central :Wei-ture. 'lhc number of these bearing rollers is not essential but in the drawings l have shown six'. As shown, four of these rollers arc mounted on the brackets o, G, in which the axles are journaled.v The other two rollers are mounted in special brackets l2, 12 secured to the plate l. Each of the .rollers` is positioned4 in au aperture in the plate l, in the upper edge of the roller somewhat above the top plane olE the plate.

13 is a spider having an outer ring lllitted to rest upon the rollers ll. ll and spokes l5, l5, connecting with a. central huh 1G in which is mounted a pivot piu 17 fitting into and engaging the aperture 1 0 in the bracket 9.

Secured to the ring lll at opposite sides thereof are arcuate base plates i8, 18 which are provided at their opposite ends with vern tical apertures in which are mounted upright studs or supporting devices 1S), lf). which. are arranged so as to delizie a polygon, preferably rectangle. Each of the leur studs lli. i9 is provided at its outer side with a vertical groove in which there is mounted a rack 20. The spider 13, base plate 18 and upright-s 19 constitute` the supporting frame previously referred to.

Suitable devices are provided for connecting the bed frame or' the mining machine withthe said upright studs or supports 19, 19. As shown, there are two brackets 3l), Si), which are bolted or riveted to the bed frame. Each of these brackets is provided at each end with an arm 40, which has at its outer enda vertical aperture el adapted to rcmi leiigilii e.

weisse if i'ueehiiie ifm vertical mei/'ement i Centr-el the veivticei maniement suitable c,s iii the il() ef each. ibi'ziehel; e. .lleiiginiidiiisi simile' 'which eeiviies el'. nach end pinion d3 adapted te mesh 'WiL-.n the meh Q0 in ehe edjeeen; stud l upon each sheil is Woim i which meshes e worm 45 me. :i

shaft, Li-. Rech Shaft 4:6 fehle hearings on eine eil the ,ed upon. euch sha/fl; e

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hemd liz-.vw e?, mid this level' Connected with *die Y il? hy mesme eil: fi "michel, and

hfiiid ,levers M', 4l?, @he ienggitudinel il, @sie heioeed and the miiiiing een he raised or lowered thi'eiiigh 'the il Uls 20, iff f 'fhe Weim :md Wlwel conleiis :it i242., e5, ed, e5, serve he loch: the meine ihr. wlie'heier pesiitieii of edjvestimenta may he isili',

:ily iii @ifdef that the @we shafts fi-2, he epererted ogelhei Witheet the eiie side e' the iiieehiiie being Ai: 5h-ei' than 'the ether, ii provide :i je wei" mimeetieii between the sive shafts, im er eeiiieetimi eeiiipi'ises tive verleiis 1w, is :iii opposite 'sides eilt 'the iiiieiiiig, mwehiie, yizieii simil;'is'eiippei'ted riem: itsi il.v ii-eind.' lihe iiiiiiilig iiiefzhiiie frame, :md shits lower hei/'ing hearings en the @ai simi,

end hij :i lui-ee se e e L, Sheila; Esch shef; 49 is eci-m1 fl et ibis lowes @mi with the correiiidi sh. li; 4:2 hy ,means ef bevel gears e. end h shaft eeiries'et its upper' end e Y het 'wheel Am endless @hein 5e passes eve-i: www@ epische@ "wheels its endl the cel-tei. @hein ever i spweeliei; iivheei, en he entiteit :frame and es its f Weld eed passes eveil suitable guides end idlei spreele Wheels, Meunted when the' si* entier frame 523 et the ieeiiend e hiel/ei" Q7 'whieh is eomieeled by ineens-'eil' suite-ble geeings E38, 29, with `the spieslie': wheei By means ei this gear-- ieg lthe cuiller ehsii een he driven und when the ceiriiia'fge is iiieved forward will eut a, l inizi; vhe eee fece, The mechanism for :iai ,ing ehe caiiiege eiwei'd is shown. in ""msx, @mi YThis eempiises wie 'reeks 30 seemed te 'the frame el; eppesie sides e@ mid n, iziehsif'ei'se feed shaft 3l which is pie .PUBS

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it -their forward ends hy means of gearing 36 sind 3'? with the motor 27. By ineens of the gearing 36 and 37 the shsflas are driven in opposite dieciofis el; dieieii'l; speeds. Either ef the 'Worms 33 er 33a een he een nested 'with the shaft 3l by means me. the clutch 38. llfheii the connection. is such that power is transmitted fhiough the gesp ing 36 end she Weirm 3d the carriage er md Itor frame Will. he fedvslewly forward. When lhe eminecleiiis such .thee iowei is tiens- Hiiieed through lhe gearing 3( end the 'weim 35, jehe ceiifiage will he retiected relatively repidiy,

Vilheh the iiweiiiien is emhedied iii mi ippeiaiis ef the :e-m shevifn iii the diimviiigs, prefei Sie fellow heiiiethod ef ope'i'zieii which, is indieeed in Fig. l A tisch. is laid down ehe Center of the wem mid; the iiiii'chiiie is mii into the roem en this When the machine has ieeehe'd/he @ieper place, the iuck wheels are blocked l:mid lie i'nsohiiie ie swung around to one side es shown in full lilies in l Theil hy means @if lhe hziiid levers t? .fi-iid the gemiiig which has heen described the iiizieiiiiie4 ed as ie height` it is locked iii-pince hy memes of suitable jacks. Then the ediles Iiusehea mism is slziifted :md by meiiiris ei" the feed device which has heen. described. the carriage er Cutler fienile is advanced und i kei'lis out iii the i'siee of the coal. leiser the first lievi is mit the cualzer er the Carriage frame is'iie tieced, the jacks ere loosened end the me,n chine 'is swung; to the position indicated by dotted lines iii Fig. FL The machine is seH cuied in this second position, sind e Secend mit is them mede as hefele. This operation is repealed, The mining machine being; swim-,1 5 on the suiniiii'hle until e ceinpiee Reiff seiiiicireulsif in outline hns heen cui; inte the wel. Then lle machine is removed fem the room and the Geel is broken domi in the usuel Way, it will he noted lhelz hy 'hejuse of this lippe 'utils 'in lihe way shove 'desciihefl, the roem has u semicylindrical face instead of n plane face. This, however, is not si disadvantage. hui ou the @unimi-y is zv distinct advantage :is loading of the eezil is made easierw llt Wili he understood {the the nppnirsisliis can he used in Ways differing;` in the way above described :md is not limited to the cutting 0f a, (-eiiiplete Semi-eiiculm*Series of radial. cuts. is the cutting meeheiiism is movable re dielly sway fiem and 'lzeweird the central parte of the t "Lick, end as the outer limit of cutting is readily eointrollehle ifm lie ' bed freine in any position with respect tointim:

each angular position by means ofthe lever 38 the radial distances from the central part of the truck to theouter'edge of the kerf at different points, circumferentially separated, can be varied as may be desired to cut a korf having an outline other than a simple semi-circular outline, 'such as that indicated in Fig. 5. in this respect an apparatus embodying my invention has marked advantage over earlier mechanisms which were adapted only for cutting arcuate kerfs.

What I claim is 1. In a mining apparatus, the combination of a main base frame, a bed frame, connections between the two frames providing for movement ofthe bed frame vertically with respect to the base frame and angularly with` respect thereto about a vertical axis, a hori-- zontally extending cutter frame, connections between the cutter fraine'and the bed frame adapted to permit longitudinal movement of the former away from and toward the said axis and, in cooperation with-the connections between the base frame and bed frame, to support the cutter :frame in an unvarying definite angular relation to the base frame for each position of angular ,l'ustmeut in which the said bed frame is ri, cutting mechanism carried by the cutter frame at vthe outer end thereof and movable at rightangles to the lines of movement of the saidcutter frame, and powerl feed devices cooperating with the cutter frame to advance the saidl cutting mechanism toward the coal beyond all other parts of the machine, whereby a kerf can be cut with the the base frame.

2. In a mining apparatus, the combination of a main base frame, a bed trame, connections between the two frames providing fdc frame, to support the cutter frame ina definite unvarying angular relation to the base frame Afor each position of angular adjustmentin which the said bed frame is held, continuously moving constantly acting cutting mechanism 'carried by 'the cutter frame at the outer end thereof, and power feed devices cooperating with the cutter frame to advance the said cutting mechanisni toward the coal .beyond all other parts of the machine, whereby a kerf can be cut with the bed frame in any position with. re-

spect to the base frame. l

3. In a mining apparatus, the combination of a main base frame, abcd frame connecconnections between the base frame and bed 'incense tions between the two frames providing for movement of the' bed frame vertically with respect to the base frame and angularly with respect thereto about a vertical axis, f.. liori zontally extending cutter frame, connections between the cutter frame and the'bed frame adapted to permit longitudinal movement of the former awaylfroin `und toward thc said axis and, in cop'eration with the con nections betweenthe base frame and bed i5 frame, to support the cutter frame in u definite unvarying angular relation to the base frame for each position. of angular adjustment in which the said bed frame is held, cutting mechanism carried by the cutter frame at the outer end Ythereof and active at points widely se` aratcd transversely of the cutter frame, an power feed devices cooperating withithe cutter frame to advance the said cuttin'r mechanism toward the coal beyond all ot 1er parts of the ma chine, whereby a broad korf can be cut with the bed frame in any position with respect to the base freine.

fd. In a mining apparatus, the combination of a main 'base frame, a'supporting frame mounted on the base frame and movable with respect thereto about 'a vertical axis, a bed' frame mounted on the supporting frame for rotary movement therewith and 9 vertically 'adjustable with respJect thereto, a cutter frame mounted on the ed frame for n'xovenient away .from and toward the'said axis, cutting mechanism carriedby the cutter frame at the outer end thereof 'and active at points, widely separated transversely of the cutter name, and power feed devices cooperating with the cutter frame to ad-v vance the said cutting meclw-nisni toward the coal beyond all other parts of the muim.' chine, whereby a broad lierf can be cut with the bed frame in any position with respect to the base frame.

In a mining apparatus, the combination of a wheeled truck, a bed frame, connections between the two frames providing for movement of the bed vframe vertically with respect to the base frame and angularlywith respect thereto about a vertical axis, a horizontally extending cutter frame, conneo tions between the cutter frame und the bed frame adapted to permit longitudinal niovc- Ament of the former away from and toward the said axis and, in cooperation with the frame, to hold the cutter frame in -a`definite angular relation to the base freine for each position of angular adjustment in which the said bed frame is held, cutting mechanism carried by the cutter frame at the outer end thereof and active at points widely separated transversely of the. cutter frame, and power feed devices coperating with the cutter frame to advance the said cutting mecha nism toward the coal beyond all other parte ci the '.inachine, whereby abroad hert can he out withthe bed 4traine in any position with respectito the base4 traine.

' 6. Ina miningn apparatus, the combination of a main base iframe, supporting track .wheels therefor, an elongated Vhorizontally extending movable cutter-trame, connections between the' cutter trarne and the base )trame adapted to permit horizontal movement oi the cutter trarne only vendwise outward and .inward'in relation 'tothe base iframe and cutter trarne relatively to the base traine.

while the cutting mechanism. is in operation to advance the latter beyond all the other par-ts ott the machine and cause the cutting ol' a kerl variable in depth when. measured radially from the central part el the truck, and

means for adjusting the cutterlraine vertically relatively to the base iframe to 'vary the height of the hert 7, l'n a mining apparatus, the combination of a main base traine, supporting traclr wheels' therefor,` a horizontally extending cutter frame, connections between the cutter iframe and the base traine adapted to permit horizontal movement or' the cutterwfraine bodily outward and inward 'and laterally across the iront ci the bam :traine irorn points outside thevertical plane of one track rail to points outside the vertical plane of the other track rail., said connections being adapted also to permit vertical movement of the cutter frame and to` insure that the cutter frame, whenever aparticular point thereof occupies any given position in relation to the base frame, shall bear a corresponding and invariable angular relation to the base frame, a korf cutting mechanism carried by the cutter frame and 'comprising devices constantly movi-ng relatively thereto, means for adjusting the cutter frame vertically, and means for moving the cutter frame horizontally relatively to the base frame while'the cutting' mechanism is in operation to advvance the latter beyond allother p rts of the machine. l

8. ln a mining apparatus, the combination of a main base frame, supporting track wheels therefor, a horizontally extending cutter iframe, connections between the cutter frame and the base frame adapted to permit neonata horizontal movement. of the cutter frame `bodily outward and inward and laterally across .the front of the base traine from points outside the vertical plane of one track rail to points outside thevertical plane of the other traclr rail, said connections being; adapted also to permitlvertical movement of the cutter trarne' and to insure that the. cutter traine, whenever a particular point thereof occupies any given position in relation to i,

the base trarne, shall bear a corresponding and invariable angular. relation to the base traine, a lrerf cutting.; mechanism carried by they cutter frame and comprising devices constantly moving` relatively thereto, cans for adjusting the cutter traine vertically rela-4 tively' to the base traine, and rneans sup-- `ported entirely on the base frame for moving' the cutter trarne horizontally relatively to' ticular point thereof.' occupies any given po sition 'in relation to the base frame, shall bear a corresponding and invariable angular relation to the base trarne, said connections comprising a horizontal guide and a vertical pivot respectively peru'iittine,I transiativ'e`u movements outward and inward and an'- gular increments from points outside the vertical. plane of one track rail to points outside vertical plane of the other traclr rail, a herfcutting' mechanism carried by the cutter iframe and' cornprising3a devices constantly moving relatively thereto, means ior adjusting the cutter trarne vertically relatively to the base frame, and means tor inov ing the cutterl traine relatively to the base iframe while the cutting mechanism is in operation to advance the latter, beyond. all

other parts or the machine.

l0. ln a mining apparatus, the combination. oi a main base frame, supporting tracltr wheels therefor, a horizontally extending rigid cutter frame, connections between the cutter frame and the base frame adapted to permit'horiaontal movement oif'- the cutter i frame bodily outward and inward and laterally across the iront-oi the base traine i'rorn points outside the vertical plane ci one track rail to points outside the vertical plane of vthe other track rail, said connections being adapted also to permit vertical movement of the cutter frame and to insure that the cutter frame, Whenever a particular point thereofoccupics any given position in relation to the base frame, shall bear a corresponding and invariable angular relation to the base lili llli

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frame, a lrerf cutting mechanism carried by the cutter frame and comprising cutting devices constantly movingA relatively thereto, a driving motor for the cutting mechanism ixedly connected to the cutter traine, means for moving the cutter frame relatively to the base frame While the cuttingmechanism is in operation to advance the latter beyond all other parte oli the machine and cause the cutting of a hert variable in depth when measured radially from the central part of the truck, and means for adjusting the cutter frame vertically relatively to the base fra-ine to vary the height of the kerl".

` l1. In a mining apparatus, the combination of a main base trame, supporting track wheels therefor, a horizontally ei'rtending cutter frame', connections between the cutter frame and the base frame adapted to permit horizontal movement of the cutter frame bodily outward and inward and laterally across the front of the base frame from points outside the vertical plane of one track rail to points outside the vertical plane .of the other track rail, said connections being` adapted also to permit vertical 'movement ot the cutter frame and to insure that the cutter frame, whenever a particular point thereof occupies any given position in relation to the base trame7 shall bear a corresponding and invariable angular relation to the base trame, a kerl cutting mechanism carried by the cutter frame and comprising devices constantly moving relatively thereto, means for adjusting the cutter frame vertically, and means carried entirely by the base frame -iter moving the cutter frame horizontally relatively to the base :frame while the cutting mechanism is in operation to advance the latter beyond all other parts ot' the machine.

12. ln a miningV apparatus, the combinaf tion of a main base frame, supporting track wheels thereforj a horizontally extending rigid cutter frame, connections between the two frames adapted to permit vertical adjustment of the cutter 'iframe and comprising a vertical pivot and a horizontal guide respectively permitting angular movements of the cutter frame around said pivot and translative i'novements of the cutter frame relative to said pivot, a motor fixedly connected to the cutter 'frame to move therewith, a korf cutting mechanism carried by the cutter frame and 'driven by the motor`r the said mechanism comprisingdevices oonstantly moving relatively to the cutter frame, power feed devices coperating with the cutter frame to advance the saidcuttimgq 4mechanism toward the coal beyond all other parts-of the macliine. and means for adjusting the cutter l'ran'ic vertically relatively to the base trame 'to vary the height of the kerl.

13. ln a noining` apparatusj the combina- Leonesa tion ci a movable'main base frame, a horizontally projecting rigid cutter frame carried by the base frame and movable with respect thereto angularly about a vertical axis fixed in relation to the base frame and radially outward and inward toward and from the coal being cut, a motor {ixedly connected to the cutter frame to move therewith, a kerf cutting mechanism carried by the cutter frame and driven by the motor.y the said mechanism comprising devices constantly moving relatively to the cutter frame, power feed devices copeating with the cutter frame to advance the said cutting mechanism toward the coal beyond all other parts of the machine, and means for. adjusting the cutter Jframe vertically relatively to the base frame to vary the height of the korf. `i

14. In a Wheel supported mining apparatus adapted vto be transported over the tracks of a mine and to cut a horizontal kerfextending across its front while supported on track extending longitudinally toward the iace of the coal. the combination of a base frame, supporting track wheels therefor, an elongated horizontally extend- .ing cutter frame, an endless cutter chain mounted to move' in a horizontal path around the periphery ot the cutter frame` said cutter frame and chain having their rear parts arranged permanently directly above the base frame, supporting connections between the cutter frame and thc base frame adapted to permit the cutter frame and chain to move bodily vertically and longitudinally and to turn around an upright axis within the vertical bounding lines of the base Jframe so that the front part of the cutter frame and chain are moved laterally across the longitudinal lines of the base rame, said supporting connections comprising a supporting frame mounted to swing laterally in rela-tion to the base frame, and having a plurality ot upright supports arranged at the angles of a widely extended horizontal polygon, two of said upright supports being; disposed laterally opposite each other in front of the others and the cutter frame being disposed between said front supports to extend forward across their vertical transverse plane to points in front of the base frame, motor devices carried by the base frame, and means actuated by the motor i devices for driving the cutter chain and simultaneously moving.,r the cuttcrframc and chain horizontally to eut the hert.l

15. In a wheel supported mining apparatus adapted to be transported over the tracks of a mine and to cut a horizontal ker extending across its front while .supported on a track extending longitudinally toward the face of the coal the combination of a base frame, supporting track wheels therefor, an elongated horizontally extending cuttracks of o mine and to cui; a horizontal. kerf extending? 'aeross its front Wlhlle supportefl .on a; track extending longitudinally toward 'the fece of the eoal, the eombietion of e base freinee supporting track wheels there- 'for7 e .supportlng frame mounted on the" bese frame direetly over its wheelbase to 'turn 1n horizontal lames and comprlsmg a plurality of uprgt supports disposed et the angles of s, W1dely ext-ended 4horizont-el polygon, a, horizontally disposefl bed frame r``vertrloelly ecljustebly mounted on the upright supports, e horizontally extending eut- @genees orourrfl the peripheryof the cutter frame,

and emotor for driving the cutter elmin hxedly connected to the cutter frame, the cutter frame :md ehem bemg (lleposed neer Lthe uppersrleof the bed frame :md the mo- `tor being disposed in planes below the outter chain (in position to move with the cutter fra-me 1n the space between the axes of the 'said prght supports.

ln testimony whereof I aflx my signature 1n presence of two wltuesses.

CARL J. WmsoM.v

l Witnesses:

T. lvl. oLweLL, v Booms: T. FISHER. 

